First of all, let me say....you are not alone. There are a lot of people having this same issues with a lot of different printers. You didn't say how this particular printer was connected to the network. Is it an "N" model with integrated networking built in or is hosted by another machine on the network. Any how the problem seems to be between Office 2k7 (word and excel specifically) and the PCL (Printer Control Language) driver available for this model printer. I know Xerox is working on a new driver and I would say your best bet might be to contact them (generally excellent support) and see if they can plug you into a new driver or perhaps even a beta driver that they have currently in production.